一种用Javascr ipt开发的网页特效菜单-A Javascr ipt development netnew menu

web开发常用的帮助文档，包括vbscr ipt，jscr ipt，javascr ipt菜单-commonly used for Web development with the help of documents, including vbscr ipt, jscr ipt. javascr ipt menu

Javascr ipt设置的二级菜单，复制代码可以实现效果。-Javascr ipt to set the secondary menu, copy the code can achieve the effect.